Subscribe to Our Youtube Channel
Related Manuals for National Instruments NI 9227E
Summary of Contents for National Instruments NI 9227E
- Page 1 OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9227E 4-Channel, 5 A , 24-Bit, Simultaneous, Channel-to-Channel Isolated Analog Input Module...
- Page 2 This document describes how to use the National Instruments 9227E and includes dimensions, terminal assignments, and specifications for the NI 9227E. Visit and enter ni.com/info rdsoftwareversion to determine which software you need for the modules you are using. For information about installing, configuring, and programming the system, refer to the system documentation.
- Page 3 NI 9227E Dimensions The following figure shows the dimensions of the NI 9227E. 73.4 (2.89) 0.0 (0.00) Figure 1. NI 9227E Dimensions in Millimeters (Inches) © National Instruments Corp. NI 9227E Operating Instructions and Specifications...
- Page 4 Connecting the NI 9227E The NI 9227E has four 2-terminal detachable screw-terminal connectors that provide connections for four simultaneously sampled, isolated analog input channels. AI0+ AI0– AI1+ AI1– AI2+ AI2– AI3+ AI3– Figure 2. NI 9227E Terminal Assignments NI 9227E Operating Instructions and Specifications...
- Page 5 You can connect ground-referenced or floating current sources to the NI 9227E. Connect the positive side of the current source to the AI+ terminal, and connect the negative side of the current source to the AI– terminal. If you make a ground-referenced connection between the current source and the NI 9227E, make sure the voltage on the AI+ and AI–...
- Page 6 Current Source AI– NI 9227E Figure 3. Connecting a Grounded Current Source to the NI 9227E Current Source AI– NI 9227E Figure 4. Connecting a Floating Current Source to the NI 9227E NI 9227E Operating Instructions and Specifications ni.com...
- Page 7 The NI 9227E analog input channels are floating with respect to earth ground and each other. The incoming analog signal on each channel is conditioned, buffered, and then sampled by a 24-bit Delta-Sigma ADC. Each channel provides an independent signal path and ADC, enabling you to sample all four channels simultaneously.
- Page 8 The small amount of variation in gain with respect to frequency is called the passband flatness. The digital filters of the NI 9227E adjust the frequency range of the passband to match the data rate. Therefore, the amount of gain or attenuation at a given frequency depends on the data rate.
- Page 9 0.025 0.000 –0.025 –0.050 Frequency/Data Rate (Hz) Figure 6. Typical Passband Flatness for the NI 9227E © National Instruments Corp. NI 9227E Operating Instructions and Specifications...
-
Page 10: Alias-Free Bandwidth
Alias-Free Bandwidth Any signal that appears in the alias-free bandwidth of the NI 9227E is not an aliased artifact of signals at a higher frequency. The alias-free bandwidth is defined by the ability of the filter to reject frequencies above the stopband frequency, and it is equal to the data rate minus the stopband frequency. - Page 11 16.667 kS/s, and so on down to 1.613 kS/s, depending on the value of n. When using an external timebase with a frequency other than 12.8 MHz, the NI 9227E has a different set of data rates. The NI cRIO-9151 R Series Expansion chassis Note does not support sharing timebases between modules.
-
Page 12: Sleep Mode
In sleep mode, the system consumes minimal power and may dissipate less heat than it does in normal mode. Refer to the Specifications section for more information about power consumption and thermal dissipation. NI 9227E Operating Instructions and Specifications 12 ni.com... -
Page 13: Specifications
Number of channels......4 analog input channels ADC resolution......... 24 bits Type of ADC........Delta-Sigma (with analog prefiltering) Sampling mode ......... Simultaneous Internal master timebase ( f Frequency ........12.8 MHz Accuracy........±100 ppm max © National Instruments Corp. 13 NI 9227E Operating Instructions and Specifications... - Page 14 Understanding NI 9227E Data Rates section for more information. The maximum recommended continuous RMS current value applied simultaneously on all four channels to keep the power dissipation inside the module within safe operating limits. NI 9227E Operating Instructions and Specifications 14 ni.com...
- Page 15 = 50 kS/s) ....400 μA Input noise ( f Overcurrent conditions to keep the module operating within specified limits. The maximum DC current that produces a non-saturated reading. © National Instruments Corp. 15 NI 9227E Operating Instructions and Specifications...
- Page 16 Accuracy at operating range of 10 A Percent of Percent of Reading Range Measurement Conditions (Gain Error) (Offset Error) Calibrated max (–40 to 85 °C) ±0.38% ±0.19% Range equals 7.07 A peak (5 A NI 9227E Operating Instructions and Specifications 16 ni.com...
- Page 17 = 50 kS/s) .... 0.1° max + 3.2 μs Input delay ........38.4/f Passband Frequency ........0.453 · f Flatness ( f = 50 kS/s) ....±100 mdB max © National Instruments Corp. 17 NI 9227E Operating Instructions and Specifications...
-
Page 18: Power Requirements
= 1 kHz, –1 dBFS)...... –95 dB MTBF ..........Contact NI for Bellcore MTBF or MIL-HDBK-217F specifications. Power Requirements Power consumption from chassis Active mode ....... 730 mW max Sleep mode ......... 50 μW max NI 9227E Operating Instructions and Specifications 18 ni.com... -
Page 19: Physical Characteristics
(0.28 in.) of insulation stripped from the end Torque for screw terminals ....0.22 to 0.25 N · m (1.95 to 2.21 lb · in.) Measured with 5 A on each channel. © National Instruments Corp. 19 NI 9227E Operating Instructions and Specifications... - Page 20 , verified by a 5 s dielectric withstand test Channel-to-earth ground Continuous ......... 250 V Measurement Category II, (Double insulation) Withstand........2,300 V , verified by a 5 s dielectric withstand test NI 9227E Operating Instructions and Specifications 20 ni.com...
- Page 21 This category refers to local-level electrical distribution, such as that provided by a standard wall outlet, for example, 115 V for U.S. or 230 V for Europe. Do not connect the NI 9227E to signals or use Caution for measurements within Measurement Categories III or IV.
-
Page 22: Online Product Certification
Certification column. Environmental National Instruments C Series modules are intended for indoor use only but may be used outdoors if installed in a suitable enclosure. Refer to the manual for the chassis you are using for more information about meeting these specifications. -
Page 23: Environmental Management
WEEE recycling center. For more information about WEEE recycling centers, National Instruments WEEE initiatives, and compliance with WEEE Directive 2002/96/EC on Waste and Electronic Equipment, visit ni.com/environment/ weee © National Instruments Corp. 23 NI 9227E Operating Instructions and Specifications... - Page 24 China RoHS compliance, go to ni.com/ environment/rohs_china Calibration You can obtain the calibration certificate and information about calibration services for the NI 9227E at ni.com/calibration Calibration interval ......1 year NI 9227E Operating Instructions and Specifications 24 ni.com...
-
Page 25: Where To Go For Support
Where to Go for Support The National Instruments Web site is your complete resource for technical support. At you have access to ni.com/support everything from troubleshooting and application development self-help resources to email and phone assistance from NI Application Engineers. - Page 26 National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.
Need help?
Do you have a question about the NI 9227E and is the answer not in the manual?
Questions and answers